code and images for SIM800L project

Author: das1396

Interfacing SIM800L with ESP32/README.md

@@ -0,0 +1,58 @@
+
+void setup() {
+  Serial.begin(9600);
+  Serial2.begin(9600);
+  delay(3000);
+  test_sim800_module();
+  send_SMS();
+}
+
+void loop() {
+  updateSerial();
+}
+
+
+void test_sim800_module()
+{
+  Serial2.println("AT");
+  updateSerial();
+  Serial.println();
+  Serial2.println("AT+CSQ");
+  updateSerial();
+  Serial2.println("AT+CCID");
+  updateSerial();
+  Serial2.println("AT+CREG?");
+  updateSerial();
+  Serial2.println("ATI");
+  updateSerial();
+  Serial2.println("AT+CBC");
+  updateSerial();
+}
+
+
+void updateSerial()
+{
+  delay(500);
+  while (Serial.available())
+  {
+    Serial2.write(Serial.read());//Forward what Serial received to Software Serial Port
+  }
+  while (Serial2.available())
+  {
+    Serial.write(Serial2.read());//Forward what Software Serial received to Serial Port
+  }
+}
+
+
+void send_SMS()
+{
+  Serial2.println("AT+CMGF=1"); // Configuring TEXT mode
+  updateSerial();
+  Serial2.println("AT+CMGS=\"+919804049270\"");//change ZZ with country code and xxxxxxxxxxx with phone number to sms
+  updateSerial();
+  Serial2.print("Circuit Digest"); //text content
+  updateSerial();
+Serial.println();
+  Serial.println("Message Sent");
+  Serial2.write(26);
+}